1. Code of Federal Regulations, Title 12, Parts 500–599, U.S. Government Printing Office, Washington DC, 1995.
2. USDA, FSIS, National Residue Program Plan, Washington DC, 1995.
3. Analytical Chemistry Laboratory Guidebook: Residue Chemistry Method – SUL 1, Food Safety and Inspection Service, USDA, Washington DC, 1991.
4. EPA Pollution Prevention Strategy, Fed. Reg. 56 (1991) 7849–7864.
5. Isolation of Sulfonamides from Fortified Chicken Tissues with Supercritical CO2 and In-Line Adsorption